Simple electron-electron scattering in non-equilibrium Green's function simulations

David O. Winge, Martin Franckié, Claudio Verdozzi, Andreas Wacker, Mauro F. Pereira

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review


In this work we include electron-electron interaction beyond Hartree-Fock level in our non-equilibrium Green's function approach by a crude form of GW through the Single Plasmon Pole Approximation. This is achieved by treating all conduction band electrons as a single effective band screening the Coulomb potential. We describe the corresponding self-energies in this scheme for a multi-subband system. In order to apply the formalism to heterostructures we discuss the screening and plasmon dispersion in both 2D and 3D systems. Results are shown for a four well quantum cascade laser with different doping concentration where comparisons to experimental findings can be made.

TidskriftJournal of Physics: Conference Series
StatusPublished - 2016 apr. 12

Ämnesklassifikation (UKÄ)

  • Den kondenserade materiens fysik


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